A Trip to Courtenay!

Maverick

Regular Member
June 2014

I decided to take a trip to Courtenay for the cars annual service and a session on the rolling road. For three reasons :-

A) I have never had a dyno run with the car so it would be interesting to see how she is running and what figures the engine has.
B) Jon and the boys can tweak the map live if needed, since it has received various exhaust and induction changes in the four years since the stage 1 map was done.
C) The car only really gets used locally, so a 260 mile round trip did the car the world of good.

So I'll let the pics do the talking!

First up is the full service, I have now swapped over to fully synthetic Valvoline Oil.

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All done with no issues! Then in to the dyno cell.

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All tied down and the first run!

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The original re-map needed no adjustment as the fuelling, ignition etc were perfect. One of the best they have seen according to the guys.

The results were :-

163.99 BHP
164.14 lb/ft Torque

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I was very pleased with the results, considering the changes were purely for breathing. The changes are :-

Vectra C inlet pipe
K&N Panel Filter in de-restricted airbox
Polished Throttle Body
Courtenay/Tullet 4 branch exhaust manifold
Courtenay 2.5" down pipe with 200 cell sports cat
Standard Astra Turbo 2 1/4" cat back system

But this doesn't tell the whole story. The car now produces just 21lb/ft less than a standard Astra Coupe/Convertible Turbo. Add in the increased in gear acceleration from the 4.17 final drive gearbox, lighter engine etc, and it makes a pretty swift car for a N/A engine and enough to keep a standard turbo honest to the legal limit! Jon from Courtenay who is good friend of mine, was really impressed on how well she pulled through the gears and how willing she was wanting to rev.
After this, we took a gentle 55/60mph drive home which resulted in 42.1mpg over the entire return trip!

So a really good day!!
 

Tubby

Member
How many pennies did it cost for the service and dyno if you don't mind me asking. They are only a few miles up the road from me.
 

Maverick

Regular Member
Hi Rushy, the charger conversion will be done. I am convinced about it now I have spoken in great depth with Evo Carl at Billing last weekend. Just got to get some housey things done to keep the Mrs sweet lol. Maybe at some point next year, but it will get done. I'll start compiling the bits I need over the next 12 months.
 

rushy

Senior Member
LOL, you finally succumbed, surely that'll be the final trick up the old girls sleeve, cant think of anything else you could do to her after that unless the arches need cleaning again :)
 
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